Monochromatic light from a He-Ne laser (? = 632.8 nm) is incident on a diffraction grating containing 5000 lines/cm. Determine the angle of the first-order maximum
a. 18.4°
b. 39.2°
c. 14.6°
d. 27.7°
e. 13.9°
a
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A rough surface for infrared waves may be polished for
A) radio waves. B) light waves. C) both of these D) neither
A wheel is rotated about a horizontal axle at a constant angular rate. Next, it is rotated in the opposite direction with the same angular rate. The acceleration at a point on the top of the wheel in the second case as compared to the acceleration in the first case:
a. is in the same direction. c. is upward. b. is in the opposite direction. d. is tangential to the wheel.
Answer the following statement(s) true (T) or false (F)
1. Ignoring spin, the possible energies of a quanton moving in one dimension are only quantized if the quanton is bound.
A car travels at 50.0 km/hr for 2.00 hours. It then travels an additional distance of 40.0 km in 1.00 hour. The average speed of the car for the entire trip is
A. 61.0 km/hr. B. 57.1 km/hr. C. 53.3 km/hr. D. 46.7 km/hr. E. 30.0 km/hr.